diff --git a/tools/cooja/apps/powertracker/build.xml b/tools/cooja/apps/powertracker/build.xml
index cd608277f..7306a374e 100644
--- a/tools/cooja/apps/powertracker/build.xml
+++ b/tools/cooja/apps/powertracker/build.xml
@@ -1,17 +1,18 @@
 <?xml version="1.0"?>
 
 <project name="Cooja: Power Tracker" default="jar" basedir=".">
-	<property name="cooja" location="../.."/>
+  <property name="cooja" location="../.."/>
   <property name="cooja_jar" value="${cooja}/dist/cooja.jar"/>
 
-  <available file="${cooja_jar}" type="file" property="cooja_jar_exists"/>
-  <fail message="COOJA jar not found at '${cooja_jar}'. Please compile COOJA first." unless="cooja_jar_exists"/>
+
 
   <target name="init">
     <tstamp/>
   </target>
 	
   <target name="compile" depends="init">
+    <available file="${cooja_jar}" type="file" property="cooja_jar_exists"/>
+    <fail message="COOJA jar not found at '${cooja_jar}'. Please compile COOJA first." unless="cooja_jar_exists"/>
     <mkdir dir="build"/>
     <javac srcdir="java" destdir="build" debug="on" includeantruntime="false">
       <classpath>
diff --git a/tools/cooja/build.xml b/tools/cooja/build.xml
index ac98ecce7..287da6bb3 100644
--- a/tools/cooja/build.xml
+++ b/tools/cooja/build.xml
@@ -96,6 +96,7 @@ The COOJA Simulator
     <ant antfile="build.xml" dir="apps/avrora" target="clean" inheritAll="false"/>
     <ant antfile="build.xml" dir="apps/serial_socket" target="clean" inheritAll="false"/>
     <ant antfile="build.xml" dir="apps/collect-view" target="clean" inheritAll="false"/>
+	<ant antfile="build.xml" dir="apps/powertracker" target="clean" inheritAll="false"/>
   </target>
 
   <target name="run" depends="init, compile, jar, copy configs">
@@ -189,6 +190,7 @@ The COOJA Simulator
     <ant antfile="build.xml" dir="apps/avrora" target="jar" inheritAll="false"/>
     <ant antfile="build.xml" dir="apps/serial_socket" target="jar" inheritAll="false"/>
     <ant antfile="build.xml" dir="apps/collect-view" target="jar" inheritAll="false"/>
+    <ant antfile="build.xml" dir="apps/powertracker" target="jar" inheritAll="false"/>
   </target>
 
   <target name="run_nogui" depends="init, compile, jar, copy configs">